PEAVY
CGF II, Certified Grumble Framer Level 2
Any suggestions?
Uv arcival sprays for documents & photos
- Thread starter PEAVY
- Start date
Several Grumblers are photo processors and use sprays routinely, and may respond more directly to your question. Here's a recent thread about sprays for giclee images on canvas, but the suggestions might work for paper items, as well:
http://www.thegrumble.com/showthread.php?t=36004&highlight=Giclee+spray
If preservation is an issue, how much preservation do you want? It would be unwise to apply a permanent coating to any item that is valuable, or may become valuable in the future.
Sprays may be convenient and cheap, but their protection is quite limited. They provide almost no protection against mechanical damage, such as punctures, abrasions, or scratches.
There is some risk involved with the application of any permanent coating -- for example, if a gnat lands and gets stuck on the wet coating, the image is ruined. The same may be true if the spray is applied over an unseen spot of lint.
UV protection of sprays is inferior to glazing. Most of them do not specify details about the amount or frequency range of UV light eliminated. Some sprays tout "UV inhibitors" that serve to protect the coating from discoloration, but offer almost no UV protection for the coated image.
If you want the best protection from mechanical damage, soiling, and light, you can't beat glass or acrylic that filters out 98% or 99% of light in the range of 300 to 380 nanometers. There is no better protection against light damage available at any price, other than keeping it in the dark.
http://www.thegrumble.com/showthread.php?t=36004&highlight=Giclee+spray
If preservation is an issue, how much preservation do you want? It would be unwise to apply a permanent coating to any item that is valuable, or may become valuable in the future.
Sprays may be convenient and cheap, but their protection is quite limited. They provide almost no protection against mechanical damage, such as punctures, abrasions, or scratches.
There is some risk involved with the application of any permanent coating -- for example, if a gnat lands and gets stuck on the wet coating, the image is ruined. The same may be true if the spray is applied over an unseen spot of lint.
UV protection of sprays is inferior to glazing. Most of them do not specify details about the amount or frequency range of UV light eliminated. Some sprays tout "UV inhibitors" that serve to protect the coating from discoloration, but offer almost no UV protection for the coated image.
If you want the best protection from mechanical damage, soiling, and light, you can't beat glass or acrylic that filters out 98% or 99% of light in the range of 300 to 380 nanometers. There is no better protection against light damage available at any price, other than keeping it in the dark.
PEAVY
CGF II, Certified Grumble Framer Level 2
Great advice! What about a uv spray for old warped glass?
Are you referring to "antique" float glass that has ripples, seeds and other junk in the sheet?
No, a spray would not offer enough UV protection to matter, but you have other choices:
1. Put a thin spacer under the old glass and install a secondary sheet of UV-filtering glazing under it. If weight is an issue in an old frame, acrylic has half the weight of glass.
2. Window-tinting companies sell plastic flim that clings to glass. It's made for windows, but it could remove about 70% of UV light if applied inside the framing glass. This is a half-way measure, certainly not qualifying as preservation framing.
3. Tell the customer to sell that ripply old glass on eBay (some of it is considered to be collectible), and sell her a sheet of Museum Glass.
Or, if you were referring to something else, disregard all of the above...
